The rate at which caffeine is eliminated from the blood stream is about 15% per hour. jim drinks a caffeine soda, and the caffeine in his bloodstream peaks at 30 milligrams. write an equation that will model this.

A. y=30•0.15^x

B. y=30•1.15^x

C. y=30•0.85^x

D. y=30•15^x